Structural, magnetic and magnetocaloric properties of La0.7Sr0.3MnO3 manganite oxide prepared by the ball milling methodR. Cherif, S. Zouari, M. Ellouze, E. K. Hlil and F. ElhalouaniEur. Phys. J. Plus, 129 5 (2014) 83DOI: https://doi.org/10.1140/epjp/i2014-14083-5